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geosurface_simulation.py
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geosurface_simulation.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
simSurf
Simulation and deformation of georeferenced geological surfaces
-------------------
version : 0.0.2
copyright : (C) 2014-2016 by Mauro Alberti - www.malg.eu
email : alberti.m65@gmail.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
from __future__ import division
import os, sys
import webbrowser
from PyQt4 import QtCore
from PyQt4.QtGui import QApplication, QDialog, QGridLayout, QVBoxLayout, QWidget, QTabWidget, QToolBox, \
QLabel, QLineEdit, QPushButton, QRadioButton, QGroupBox, QMessageBox, QFileDialog
from math import radians, sin, cos
from numpy import *
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from geosurf_pure.surf_io import geosurface_export_vtk, geosurface_export_grass, geosurface_save_gas, \
geosurface_export_xyz, geosurface_export_esri_generate
from mpl.mpl_widget import view_3D_surface
__version__ = "0.0.2"
class GeosurfaceSimulationDialog( QDialog):
def __init__(self, application_dir, help_html_subpath):
super( GeosurfaceSimulationDialog, self ).__init__()
self.application_dir = application_dir
self.help_html_subpath = help_html_subpath
self.analytical_surface_params = None
self.geographical_surface_params = None
self.setup_gui()
def setup_gui( self ):
dialog_layout = QVBoxLayout()
main_widget = QTabWidget()
main_widget.addTab( self.setup_simulation_tab(),
"Simulation" )
main_widget.addTab( self.setup_help_tab(),
"Help" )
dialog_layout.addWidget(main_widget)
self.setLayout( dialog_layout )
self.adjustSize()
self.setWindowTitle( 'simSurf - Geosurface simulation' )
def setup_simulation_tab( self ):
simulWidget = QWidget()
simulLayout = QGridLayout( )
simulToolBox = QToolBox()
simulToolBox.addItem( self.setup_analformula_tb(),
"Analytical formula" )
simulToolBox.addItem( self.setup_geogrparams_tb(),
"Geographic parameters" )
simulToolBox.addItem( self.setup_output_tb(),
"Output" )
simulLayout.addWidget( simulToolBox, 0, 0, 1, 2 )
simulWidget.setLayout(simulLayout)
return simulWidget
def setup_analformula_tb( self ):
analformWidget = QWidget()
analformLayout = QGridLayout( )
analformLayout.addWidget( QLabel("a min"), 0, 0, 1, 1 )
self.a_min_QLineEdit = QLineEdit()
analformLayout.addWidget( self.a_min_QLineEdit, 0, 1, 1, 1 )
analformLayout.addWidget( QLabel("a max"), 0, 2, 1, 1 )
self.a_max_QLineEdit = QLineEdit()
analformLayout.addWidget( self.a_max_QLineEdit, 0, 3, 1, 1 )
analformLayout.addWidget( QLabel("grid cols"), 0, 4, 1, 1 )
self.num_columns_QLineEdit = QLineEdit()
analformLayout.addWidget( self.num_columns_QLineEdit, 0, 5, 1, 1 )
analformLayout.addWidget( QLabel("b min"), 1, 0, 1, 1 )
self.b_min_QLineEdit = QLineEdit()
analformLayout.addWidget( self.b_min_QLineEdit, 1, 1, 1, 1 )
analformLayout.addWidget( QLabel("b max"), 1, 2, 1, 1 )
self.b_max_QLineEdit = QLineEdit()
analformLayout.addWidget( self.b_max_QLineEdit, 1, 3, 1, 1 )
analformLayout.addWidget( QLabel("grid rows"), 1, 4, 1, 1 )
self.num_rows_QLineEdit = QLineEdit()
analformLayout.addWidget( self.num_rows_QLineEdit, 1, 5, 1, 1 )
analformLayout.addWidget( QLabel("Formula"), 2, 0, 1, 1 )
self.formula_QLineEdit = QLineEdit()
analformLayout.addWidget( self.formula_QLineEdit, 2, 1, 1, 5 )
analform_validate_QPushButton = QPushButton("Calculate matrix")
analform_validate_QPushButton.clicked.connect( self.calculate_z_array )
analformLayout.addWidget( analform_validate_QPushButton, 3, 0, 1, 6 )
view_anal_surface_QPushButton = QPushButton( "View as 3D surface" )
view_anal_surface_QPushButton.clicked[bool].connect( self.view_analytical_surface )
view_anal_surface_QPushButton.setEnabled( True )
analformLayout.addWidget( view_anal_surface_QPushButton, 4, 0, 1, 6 )
analformWidget.setLayout( analformLayout )
return analformWidget
def setup_geogrparams_tb( self ):
geogrparWidget = QWidget()
geogrparLayout = QGridLayout( )
geogrparLayout.addWidget( QLabel("lower-left x"), 0, 0, 1, 1 )
self.geog_x_min_QLineEdit = QLineEdit()
geogrparLayout.addWidget( self.geog_x_min_QLineEdit, 0, 1, 1, 1 )
geogrparLayout.addWidget( QLabel("lower-left y"), 1, 0, 1, 1 )
self.geog_y_min_QLineEdit = QLineEdit()
geogrparLayout.addWidget( self.geog_y_min_QLineEdit, 1, 1, 1, 1 )
geogrparLayout.addWidget( QLabel("map width (x range)"), 2, 0, 1, 1 )
self.grid_width_QLineEdit = QLineEdit()
geogrparLayout.addWidget( self.grid_width_QLineEdit, 2, 1, 1, 1 )
geogrparLayout.addWidget( QLabel("map height (y range)"), 3, 0, 1, 1 )
self.grid_height_QLineEdit = QLineEdit()
geogrparLayout.addWidget( self.grid_height_QLineEdit, 3, 1, 1, 1 )
geogrparLayout.addWidget( QLabel("grid rot. angle (anti-clockwise)"), 4, 0, 1, 1 )
self.rotation_angle_QLineEdit = QLineEdit()
geogrparLayout.addWidget( self.rotation_angle_QLineEdit, 4, 1, 1, 1 )
simulate_surface_pButton = QPushButton( "Create simulated geosurface" )
simulate_surface_pButton.clicked[bool].connect( self.geosurface_XYZ )
simulate_surface_pButton.setEnabled( True )
geogrparLayout.addWidget( simulate_surface_pButton, 5, 0, 1, 2 )
view_anal_surface_QPushButton = QPushButton( "View as 3D surface" )
view_anal_surface_QPushButton.clicked[bool].connect( self.view_geographical_surface )
view_anal_surface_QPushButton.setEnabled( True )
geogrparLayout.addWidget( view_anal_surface_QPushButton, 6, 0, 1, 2 )
geogrparWidget.setLayout( geogrparLayout )
return geogrparWidget
def setup_output_tb( self ):
outputWidget = QWidget()
outputLayout = QGridLayout( )
outputLayout.addWidget( QLabel("Format: "), 0, 0, 1, 1 )
self.save_as_grass_QRadioButton = QRadioButton( "Grass")
self.save_as_grass_QRadioButton.setChecked ( True )
outputLayout.addWidget( self.save_as_grass_QRadioButton, 0, 1, 1, 1 )
self.save_as_vtk_QRadioButton = QRadioButton( "VTK")
outputLayout.addWidget( self.save_as_vtk_QRadioButton, 0, 2, 1, 1 )
self.save_as_gas_QRadioButton = QRadioButton( "Gas (json)")
outputLayout.addWidget( self.save_as_gas_QRadioButton, 0, 3, 1, 1 )
self.save_as_xyz_QRadioButton = QRadioButton( "xyz")
outputLayout.addWidget( self.save_as_xyz_QRadioButton, 1, 1, 1, 2 )
self.save_as_esri_generate_QRadioButton = QRadioButton( "3D ESRI generate")
outputLayout.addWidget( self.save_as_esri_generate_QRadioButton, 1, 3, 1, 2 )
simulation_output_browse_QPushButton = QPushButton("Save as ...")
simulation_output_browse_QPushButton.clicked.connect( self.select_output_file )
outputLayout.addWidget( simulation_output_browse_QPushButton, 2, 0, 1, 1 )
self.output_filename_QLineEdit = QLineEdit()
outputLayout.addWidget( self.output_filename_QLineEdit, 2, 1, 1, 4 )
self.save_surface_pButton = QPushButton( "Save surface" )
self.save_surface_pButton.clicked[bool].connect( self.save_surface )
self.save_surface_pButton.setEnabled( True )
outputLayout.addWidget( self.save_surface_pButton, 3, 0, 1, 5 )
outputWidget.setLayout( outputLayout )
return outputWidget
def setup_help_tab( self ):
helpWidget = QWidget()
helpLayout = QVBoxLayout( )
helpLayout.addWidget( self.setup_help() )
helpWidget.setLayout(helpLayout)
return helpWidget
def setup_help( self ):
help_QGroupBox = QGroupBox( self.tr("Help") )
helpLayout = QVBoxLayout( )
self.help_pButton = QPushButton( "Open help in browser" )
self.help_pButton.clicked[bool].connect( self.open_html_help )
self.help_pButton.setEnabled( True )
helpLayout.addWidget( self.help_pButton )
help_QGroupBox.setLayout( helpLayout )
return help_QGroupBox
def open_html_help( self ):
help_file_path = os.path.join(self.application_dir, self.help_html_subpath)
webbrowser.open(help_file_path, new=True)
def calculate_z_array(self):
try:
a_min = float( eval( str( self.a_min_QLineEdit.text() ) ) )
a_max = float( eval( str( self.a_max_QLineEdit.text() ) ) )
grid_cols = int( self.num_columns_QLineEdit.text() )
b_min = float( eval( str( self.b_min_QLineEdit.text() ) ) )
b_max = float( eval( str( self.b_max_QLineEdit.text() ) ) )
grid_rows = int( self.num_rows_QLineEdit.text() )
except:
QMessageBox.critical( self, "Surface simulation", "Check input analytical values" )
return
if a_min >= a_max or b_min >= b_max:
QMessageBox.critical( self, "Surface simulation", "Check a and b values" )
return
if grid_cols <= 0 or grid_rows <= 0:
QMessageBox.critical( self, "Surface simulation", "Check grid column and row values" )
return
formula = str( self.formula_QLineEdit.text() )
if formula == '':
QMessageBox.critical( self, "Surface simulation", "Define an analytical formula" )
return
a_array = linspace( a_min, a_max, num=grid_cols )
b_array = linspace( b_max, b_min, num=grid_rows ) # note: reversed for conventional j order in arrays
try:
a_list = [ a for a in a_array for b in b_array ]
b_list = [ b for a in a_array for b in b_array ]
z_list = [ eval( formula ) for a in a_array for b in b_array ]
except:
QMessageBox.critical( self, "Surface simulation", "Error in matrix calculation" )
return
self.analytical_surface_abz = a_list, b_list, z_list
self.array_params = a_min, a_max, b_min, b_max
self.grid_dims = grid_rows, grid_cols
self.analytical_surface_params = {'a min': a_min,
'a max': a_max,
'b min': b_min,
'b max': b_max,
'grid cols': grid_cols,
'grid rows': grid_rows,
'formula': formula}
QMessageBox.information( self, "Surface simulation", "Matrix created" )
def view_analytical_surface( self ):
if self.analytical_surface_params is None:
QMessageBox.critical( self, "Surface simulation", "Matrix not yet calculated" )
return
view_3D_surface( self.analytical_surface_abz )
def view_geographical_surface( self ):
if self.geographical_surface_params is None:
QMessageBox.critical( self, "Surface simulation", "Geographic surface not yet calculated" )
return
view_3D_surface( self.simulated_geosurface )
def calculate_scale_matrix( self, a_range, b_range, grid_height, grid_width ):
assert a_range > 0.0
assert b_range > 0.0
assert grid_height > 0.0
assert grid_width > 0.0
sx = grid_width / a_range
sy = grid_height / b_range
return array( [ ( sx , 0.0 ) , ( 0.0, sy ) ] )
def rotation_matrix( self, grid_rot_angle_degr ):
grid_rot_angle_rad = radians( grid_rot_angle_degr )
sin_rot_angle = sin( grid_rot_angle_rad )
cos_rot_angle = cos( grid_rot_angle_rad )
return array( [ ( cos_rot_angle , -sin_rot_angle ) , ( sin_rot_angle, cos_rot_angle ) ] )
def calculate_offset_parameters( self, transformation_matrix, llc_point_matr, llc_point_geog):
llc_point_matr_offset = dot( transformation_matrix, llc_point_matr )
return llc_point_geog - llc_point_matr_offset
def geosurface_XYZ( self ):
try:
geog_x_min = float( self.geog_x_min_QLineEdit.text() )
geog_y_min = float( self.geog_y_min_QLineEdit.text() )
grid_rot_angle_degr = float( self.rotation_angle_QLineEdit.text() )
grid_height = float( self.grid_height_QLineEdit.text() )
grid_width = float( self.grid_width_QLineEdit.text() )
except:
QMessageBox.critical( self, "Surface simulation", "Check input values" )
return
if grid_height <= 0.0 or grid_width <= 0.0:
QMessageBox.critical( self, "Surface simulation", "Check height and width values" )
return
try:
X, Y, Z = self.analytical_surface_abz
a_min, a_max, b_min, b_max = self.array_params
grid_rows, grid_cols = self.grid_dims # just for checking input completeness
except:
QMessageBox.critical( self, "Surface simulation", "Matrix not yet calculated" )
return
a_range, b_range = a_max-a_min, b_max-b_min
scale_matrix = self.calculate_scale_matrix( a_range, b_range, grid_height, grid_width )
rotation_matrix = self.rotation_matrix( grid_rot_angle_degr )
transformation_matrix = dot( rotation_matrix, scale_matrix )
offset_parameters_matrix = self.calculate_offset_parameters( transformation_matrix,
array( [a_min, b_min] ),
array( [geog_x_min, geog_y_min] ) )
X_tr =[]; Y_tr =[]
for x, y in zip( X, Y ):
orig_pt = array([x,y])
trasl_pt = dot( transformation_matrix, orig_pt) + offset_parameters_matrix
X_tr.append( trasl_pt[0] )
Y_tr.append( trasl_pt[1] )
self.simulated_geosurface = ( X_tr, Y_tr, Z )
self.geographical_surface_params = {'geog x min': geog_x_min,
'geog y min': geog_y_min,
'grid rot angle degr': grid_rot_angle_degr,
'grid height': grid_height,
'grid width': grid_width}
QMessageBox.information( self,
"Surface simulation",
"Completed" )
def select_output_file( self ):
if self.save_as_vtk_QRadioButton.isChecked():
short_txt = "*.vtk"
long_txt = "vtk (*.vtk *.VTK)"
elif self.save_as_grass_QRadioButton.isChecked():
short_txt = "*.txt"
long_txt = "txt (*.txt *.TXT)"
elif self.save_as_gas_QRadioButton.isChecked():
short_txt = "*.json"
long_txt = "json (*.json *.JSON)"
elif self.save_as_xyz_QRadioButton.isChecked():
short_txt = "*.xyz"
long_txt = "xyz (*.xyz *.XYZ)"
elif self.save_as_esri_generate_QRadioButton.isChecked():
short_txt = "*.*"
long_txt = "generate file (*.*)"
output_filename = QFileDialog.getSaveFileName(self,
self.tr( "Save as" ),
short_txt,
long_txt )
if not output_filename:
return
self.output_filename_QLineEdit.setText( output_filename )
def save_surface( self ):
try:
self.simulated_geosurface
except AttributeError:
QMessageBox.critical( self, "Surface saving", "Geosurface is not yet defined" )
return
geodata = self.simulated_geosurface, self.grid_dims
if self.save_as_vtk_QRadioButton.isChecked():
save_function = geosurface_export_vtk
elif self.save_as_grass_QRadioButton.isChecked():
save_function = geosurface_export_grass
elif self.save_as_xyz_QRadioButton.isChecked():
save_function = geosurface_export_xyz
elif self.save_as_gas_QRadioButton.isChecked():
save_function = geosurface_save_gas
geodata = {'analytical surface': self.analytical_surface_params,
'geographical params': self.geographical_surface_params }
elif self.save_as_esri_generate_QRadioButton.isChecked():
save_function = geosurface_export_esri_generate
done = save_function( self.output_filename_QLineEdit.text(), geodata )
if done:
QMessageBox.information( self, "Surface saving", "Done" )
else:
QMessageBox.critical( self, "Surface saving", "Some errors occurred" )
def main():
"""
Main of the module.
"""
help_folder = 'help'
help_file_name = 'help.html'
##
help_file_subpath = os.path.join(help_folder, help_file_name)
appl_dir = os.path.dirname(os.path.realpath(__file__))
app = QApplication(sys.argv)
form = GeosurfaceSimulationDialog(appl_dir, help_file_subpath)
form.show()
app.exec_()
main()